| 摘要 |
<p>The impact mill (1) for grinding loose material comprises at least a main rotor (2) moving in rotation around a first axis (3) inside a grinding chamber (4), at least a secondary rotor (9) moving in rotation around a second axis (10) inside an inlet chamber (11) communicating with the grinding chamber (4) and arranged on the side thereof, the secondary rotor (9) being suitable for introducing the material to be ground inside the grinding chamber (4) and wherein the inlet chamber (11) comprises at least an outlet mouth (14) of the material to be ground communicating with said grinding chamber (4).
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